Injection Port and Method of Making the Same

Abstract

An injection port for an intravenous bag including a generally hollow tube that is mountable to the intravenous bag. The hollow tube has a first end. A polymeric plug is mounted in the first end. The polymeric plug is integrally molded into the tube proximate the first end. A method for constructing the injection port including injecting a first molding material into a mold cavity, allowing the first molding material to at least partially cure and harden, moving a movable mold part to expose a first cavity defined by inner surfaces of the at least partially cured and hardened molding material, injecting a second mold material into the first cavity, allowing the second molding material to at least partially cure and harden such that the second molding material bonds with the inner surfaces and removing the injection port from the mold.

1 . A method for constructing an injection port using a mold having a mold cavity and a movable mold part, the method comprising the steps of: 
 a) injecting a first molding material into the mold cavity;    b) allowing the first molding material to at least partially cure and harden;    c) moving the movable mold part from the mold cavity to expose a first cavity defined by inner surfaces of the at least partially cured and hardened molding material;    d) injecting a second molding material into the first cavity;    e) allowing the second molding material to at least partially cure and harden such that the second molding material bonds with the inner surfaces to form the injection port; and    f) removing the injection port from the mold.    
   
   
       2 . The method of  claim 1  wherein the first molding material is a polyvinyl chloride material.  
   
   
       3 . The method of  claim 1  wherein the second molding material comprises a thermoplastic elastomer.  
   
   
       4 . The method of  claim 1  wherein the first cavity includes ribs extending from the interior wall toward a central axis of the first cavity and the second molding material bonds with the ribs in step (e).  
   
   
       5 . A method for constructing an injection port using a first mold having a first mold cavity and a second mold having a second mold cavity, the method comprising the steps of: 
 a) injecting a first molding material into the first mold cavity;    b) allowing the first molding material to at least partially cure and harden;    c) removing the at least partially cured and hardened first mold material from the first mold, the at least partially cured and hardened first mold material forming a hollow tube including a first cavity and a first end;    d) injecting a second molding material into the second mold cavity;    e) allowing the second molding material to at least partially cure and harden;    f) removing the at least partially cured and hardened second mold material from the second mold;    g) inserting the at least partially cured and hardened second mold material into the first cavity; and    h) mounting a cap onto the first end to secure the at least partially cured and hardened second mold material in the first cavity.    
   
   
       6 . The method of  claim 5  wherein the first mold material is a polyvinyl chloride material and the second mold material is a thermoplastic elastomer.